Tightness and leakage

When packaging does not fulfil its protective function, e.g. due to leaking packaging, the result can be an unsafe product, especially when contamination by microorganisms occurs, causing an undesirable loss of product integrity. Leak detection in food and medical, pharmaceutical and cosmetic packaging is essential to ensure the integrity of packaged products.

What is a leakage detection test?

There are many tests to guarantee packaging system integrity based on the type of packaging, pore size to be detected, equipment used and other factors.

At AIMPLAS, we use different test methods to detect leaks in packaging.

One of them is visual testing, in which a dye penetrant solution is used in accordance with standards ASTM F3039 or ASTM F1929. The solution is placed where there is a possible leak (e.g. weld seam, cap) and the area is checked after a standard contact time to see if the dye has penetrated into any channels.

Another test carried out at AIMPLAS to detect leaks in packaging is the bubble emission test, based on standard ASTM D3078. This test involves immersing the package in a tank where a vacuum is applied. Leaks can be detected based on the emission of air bubbles from the package. Another variant is to perform this test with an empty vessel with an absorbent paper on the base, apply the vacuum and look for leaks on the absorbent paper. This variant is used with small, product-filled containers.